Description: The earbuds stimulate the vagus nerve, which sends signals from the brain to most major organs, in order to activate the resting and digestion functions that leave you feeling relaxed and pleased. A mobile app optionally pairs the stimulation with your music library or ambient sounds to help the stimulation reflect your listening habits and environment. The Neuvana app lets you easily customize and control your Xen session. Ease into life with Neuvana Stress-Reducing Earbuds